Prerequisites
This page is only available when a TP90 transceiver is installed on your TV80 system.
How to open
This page is located in the Installation dialog box. To open, select it on the Setup menu. Use the transceiver icon of the TP90 block diagram on the I/O Setup group to open the Transceiver page.
Description
The Transceiver page contains a series of modifiable and non-modifiable settings to configure your TP90 transceiver for the TV80 system. The settings are divided into several setting groups.
NoteThese are recommended values. Do not change these values unless you are instructed to do so by Kongsberg Discovery. Incorrect changes to these values can cause the system not to work properly. Reset the recommended values if the system stops working.
Transceiver Information
The Transceiver Information group shows you the technical parameters for the transceiver. The information provided under Transceiver Information is not required for operational use.
Identity
This is the name you have given the transceiver. You can modify this setting by means of the TP90 Configurator dialog box.
Version
This is the software version currently running on the transceiver. This field is not modifiable.
Serial number
This is the serial number of the transceiver. This field is not modifiable.
IP Address
This is the transceiver's current IP Address. This field is not modifiable.
Transceiver settings
Speed of sound
The sound speed in seawater is not a constant value. Type in the text field to modify the setting. Type in the text field to modify the setting. The sound speed is expressed in metres per second. The default value is 1490 m/s.
Maximum Range
The Maximum Range value refers to the maximum horizontal distance which the transceiver can receive signals from and send
them to. Type in the text field to modify the setting. This value is expressed in metres. The default value is 2000 m.
Detection Threshold
The Detection Threshold identifies the lowest signal level the transceiver can detect above the estimated noise level. Type in the text field to modify the setting. This value is expressed in decibels. The default value is 10 dB.
Phase Detection Offset
The Phase Detection Offset identifies the centre of the phase measurement window in reference to the selected sampling instance
for the transceiver. This value is expressed in milliseconds. The default value is 0.0 ms.
Phase Detection Window Duration
The Phase Detection Window Duration identifies the time interval where the phase measurement is performed. This value is expressed in milliseconds. The default value is 1 ms.
Interrogation Rate
The Interrogation Rate command controls the interrogation rates of the sensors. The default value is Max(imum).
Diagnostics
The Diagnostics button opens the TP90 Diagnostics dialog box. The TP90 Diagnostics dialog box offers a graphical representation of the data sent and received by the transceiver.
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The first graph shows the received signal and the pulse detection threshold as a function of time. The orange marker identifies the pulse the transceiver has determined to be the sensor's reply pulse. The reply pulse is the pulse used to calculate range and bearing to the sensor. The green markers show which pulses the receiver has determined to be the consecutive measurement pulses sent by the sensor.This graph can be used for:
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Checking if the transceiver can detect the sensor(s). |
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Visualising the signal to noise ratio. |
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Selecting a good value for the detection threshold setting.
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The second graph shows the measured phase difference between the two elements of the transducer. The phase difference is used to calculate the bearing to the sensor. The graph also includes some data before and after the pulse used for the phase measurement. The phase detection window is represented by the space between the two dotted orange lines. Although we do not recommend that you change this setting, certain situation may require it. To change it, modify the Phase Detection Offset parameter in the Trawl Positioning Configurator dialog box. This parameter is under the Transceiver Settings group. The orange marker shows the location of the peak of the sensor's reply pulse. This is considered the ideal position of the phase detection window.
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NoteThe TP90 Diagnostics plots only show data when there is at least one PxPos sensor configured in the TV80 software and listed in the Sensor List.